Warning: Much of the clip at left is difficult to watch. It features an undercover investigation of the way dogs are reared and abused in puppy mills, which are legal businesses that mistreat dogs, using them to churn out as many litters as possible in order to supply those cute, fluffy puppies you see in pet store windows. Oprah was prompted to do this show after billboards in Chicago by Main Line Animal Rescue urged her to. MLAR rescues animals from puppy mills, nurses them back to health, and places them in good homes. An example of this is Shrimp, the Maltese/Poodle mix in the still seen above left. He was on death's door when MLAR intervened and nursed him back to health and happiness.